Turbine thermomechanical modelling during excessive axial movement and overspeed

Turbine Overspeed Systems and Required Response Times

Turbine overspeed events lead to the most dangerous and costly of catastrophic turbine failures. Traditionally, overspeed protection systems were designed and provided by the original equipment manufacturers (OEMs)—few options were available either in terms of testing or modifying these systems. With new turbines, and with the retrofit of older systems, it is more common to see third party syst...

Metallurgical Modelling of Thermomechanical Processing

Hydro Turbine and Governor Modelling

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Modelling of transient wind turbine loads during pitch motion

In connection with the design of wind turbines and their control algorithms, the transient loads, especially generated by time varying blade loads, are very important. In the Blade Element Momentum method, the most widespread tool in the wind turbine industry, the time constants necessary to describe these problems are not an inherent part of the model. In the present study two different approa...

Parallel Computation of Stator-Rotor Interaction in an Axial Turbine

The unsteady flow caused by the interaction of guide vanes and runner is investigated for an axial turbine. The calculation is performed in parallel. The solution algorithm and the parallelization procedures are described. The parallelization is obtained by domain decomposition with overlapping meshes. The interaction of rotor and stator is handled by a sliding interface where downstream the no...